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J. LUKES MECHANICAL SHRINKER jams 3 192 1,496,583

Filed Jan. 26. 1920 i Sheets-Sheet 1 J.LUKES Emma 3 1924.

Filed Jan. 26, 1920 /MM W Q.LUKES MECHANI CAL SHRINKER Filed Jan. 26. 1920 5 Sheets-Sheet 5 Jnma 3 1924.

J. LUKES MECHANICAL SHRINKER Filed Jan. 26. 1920 5 Sheets-Sheet 4 gums/WM ffmow June 3 1924. 1,41%,583

J. LuKEs,

MECHANICAL SHRINKER Filed Jan. 26. 1920 5 Sheets-Sheet 5 Patented June 3, 1924.

ED SATES PATENT OFFICE.

JOHN LUKES, O'F CLEVELAND, OHIO, ASSIGNOR TO THE HYDRAULIC. PRESSED STEEL COMPANY, OF CLEVELAND, OHIO, A. COPRORATION OF OHIO.

MECHANICAL SHRINKER.

Application filed January 26, 1920.

T 0 all w 72.0121 it may concern Be it known that I, JOHN Lorine, a citizen of the United States, residing at Cleveland, in the county of Guyahoga and State of ()hio, have invented a certain new and useful Improvement in Mechanical Shrinkers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates generally to machines for sizing automobile wheel rims, and more particularly to a shrinking or compressing device wherein pressure is applied to the exterior of the wheel rim for the purpose of shrinking or compressing the same into a definite size.

In some instances, the rim is undersized and must be expanded, whereas in others, it is oversized and must be shrunk or compressed; and as before stated, this particular invention relates to a machine for quickly and easily accomplishing this shrinking operation.

Another object of the invention is to provide a shrinking device of such character that it can be combined with a device for cupping and punching the rim while held in its shrunk position.

Another object of the invention is to-.providea device of this kind in which the shrinking members will be quickly and easily returned to their expanded positions as soon as the operating pressure is relieved therefrom. I a

With these various objects in view, and certain others which will become apparent as the description proceeds, the invention consists in the novel features of construction, and in the manner of combining or arranging the same, all of which will be fully described hereinafter and then pointed out in the appended claims. 1

In the drawings forming a part of this specification Fig. 1 is a front elevation of a sizing machine embodying one form of my invention, certain parts of the device being broken away in orderto disclose the various features of construction and the' manner of arranging the various parts; Fig. 2 is atransverse sectional view partly in elevation taken on the line 2-2 of Fig. 1; Fig. 3 is a face View of the segment plate; Fig. 4 is'a sectional View of the same partly in elevation and taken on the line H of Fig. 3; Fig. 5 is a view ofthe upper portion Serial No. 353,930.

of the shrinking ring; Fig. Sis a top View of the same, partly in elevation; Fig. 7 is a detail perspective view of one of the shrinking ring wedges; Fig. 8 is a detail View of a portion of the guide cover plate; Fig. 9. is a sectional view of the same; and Fig. 10 is a detail perspective view of one of the shrinking blocks with guide.

-eferring to the drawings 11 indicates the main frame comprising base 12, the upright portion 13 arranged at an angle thereto, and the brace webs 14 at the rear of the upright portion and uniting the upright portion 13 at each side with the baseportion 12.

Rigidly secured to the front face of the upright portion 13 is the sector plate 15 comprising an inner ring 16, an outer ring 17 and serles of connecting sectors 18 so dimen-- sioned and arranged as to leave radial openings between the said sectors, and where thesectors are connected to the inner and outer rings grooved portions 19? and 19 respectively will be provided.

Each sector 18 is formed with an outwardly or forwardly projecting sector 20, considerably smaller than the sector 18and so positioned as to serve as guides for the shrinking blocks 21 arranged between the said guide sectors 20, each shrinking block 21 having a depending portion 22 and an integral guide member 23 which works between nhe sectors 18 and in the grooves 19" and The shrinking blocks 21 slide upon the sectors 18, and between the sectors 20, and each shrinking block 21 is formed with a 79' cess 24 in the outer end thereof in which turns a roller 25, having its ends journalled in openings 26 produced in the block, said roller projecting slightly beyond the outer end of said block and is adapted to be engaged by the wedge blocks 27, rigidly con nected to the inner face of the shrinking ring 28, said ring 28 resting upon the outer portions of the sectors 18 and emb'racin the secgors 20 as most clearly shown in Flgs. 1 an 2.

At its upper end the shrinking ring 28 is formed with an upwardly rojecting arm 29 which is shifted from si e to side by the hydraulically operated piston 30 and yoke 31, the piston operating in the hydraulic cylinder 32 and the yoke being connected and operated from the second piston 33 also an ng i a d perated; train thcyhnder and the amount of throw can be regulated by means of an adjustable stop bolt 34.

The hydraulic cylinder is arranged at the upper end of the upright portion of the main frame and may be of any suitable construction so long as the operation thereof will serve to shift the arm 29 back and forth, and it will be understood that when the arm 29 is shifted in the direction indicated by the arrow the wedge blocks 27 will be forced to ride upon the rollers 25 carried by the shrinking blocks and force the same radially inwardly a definite distance and the wheel rim being placed within the said shrinking blocks will be acted upon at all points and shrunk the desired amount.

Upon the reverse movement of the arm 29 the shrinking ring 28 will be moved in the reverse direction carrying with it the wedge blocks, and the shrinking blocks will then be expanded to their normal positions by means of the springs 34 and 35.

The springs 34 are arranged within the radial openings 19 and bear at their inner ends upon the inner ring 16 and at their outer ends are connected to cap screws 36 screwed into the inner or rear face of the shrinking block. By means of this construction, as the shrinking block is forced inwardly, the spring 34 is compressed and as soon as the working pressure is relieved this spring 34 exerts pressure upon the block at the inner side and moves the same radially outward.

The spring is arranged upon a rod 37 which is connected at one end to the cap screw 38 and works through a guide block 39 and has a nut 40 at the outer end thereof and the guide block 39 is held stationary in the slot 41 of the plate 42. It is obvious therefore, that as the shrinking block is forced inwardly the spring 35 will be compressed and will expand as soon as working pressure is relieved therefrom and consequently exert a moving force upon the shrinking block upon the outer side thereof.

The shrinking block is therefore moved radially outward by means of the springs 34 and 35 acting against the cap screws 36 and 38 connected to the inner and outer faces respectively of the shrinking blocks.

The guide plate 42, previously referred to, is bolted to the sectors 20 of the sector plate, and cooperates with said sector plate 111 guiding the shrinking blocks and maintaining the same properly positioned at all times. 7

The slots 41, in addition to the transverse portions which receive the guide blocks 39 have sufiicient radial length to accommodate the cap screws 38, rod 37 and nut 40.

The guide plate 42 is formed with inner and outer ridges or shoulders 43 and 44 respectively to receive the face plate 45 which is in the form of a ring and which is bolted to the guide ring 42 and serves to conceal and protect the guide plate and the springs contained therein.

Thedevice as thus far described provides a simple and efiicient means for quickly and easily shrinking and sizing a sheet metal rim, and in connection with this sizing device I may employ a combined cupping and punching mechanism for cupping and punching the rim after the same has been shrunk or sized.

This cupping and punching mechanism is arranged centrally of the shrinking blocks and is indicated generally at the movable parts thereof being operated by a hydraulic cylinder and piston indicated generally at 51. i

This combined cupping and punching mechanism does not constitute any part of the present invention, but as before stated may be used in connection therewith, and it will also be understood that any other type of cupping and punching mechanism could be arranged centrally of the shrinking blocks, if so desired.

The shrinking ring is supported by and travels upon rollers 46 mounted in suitable bearing blocks 47, which in turn are secured to the forward base portion at suitable intervals, and maintains the shrinking ring in easy operative position upon the sector plate.

The shrinking or sizing machine constructed as herein shown and described is exceedingly strong and durable and simple of manufacture, and furthermore is easily assembled and when once assembled, is easily manipulated to accomplish the various functions, inasmuch as it is only necessary to insert a sheet metal rim within the shrinking blocks and apply the fluid pressure to shift the shrinking ring so as to force the shrinking blocks inwardly, and then, by reversing the movement of the shrinking ring the springs will immediately return the shrinking blocks to their normal positionsthereby permitting the sized rim to be removed from the device and another one inserted.

Having thus described my invention, what I claim is:

1. In a device of the kind described the combination with a substantially upright supporting frame, carrying a fluid operated piston, of a sector plate connected to said frame, shrinking blocks carried by said sector plate, circumferentially movable means, operated by said piston and adapted to operate upon said shrinking blocks, means for limiting the movement of said piston and blocks, and means for returning said blocks to their normal position when the pressure is removed.

2. In a device of the kind described the combination with a substantially upright supporting frame, carrying a fluid operated piston, of a sec-tor plate connected to said frame, shrinking blocks, carried by and guided in said sector plate, circumferentially movable means operated by said piston for forcing said shrinking blocks inwardly, means for forcing said blocks outwardly, a guide plate co-operating with said sector plate and means for limiting the movementof said piston and blocks.

8. In a device of the kind described the combination with a substantiallyupright supporting frame, carrying a fluid operated piston, of a sector plate secured to said frame, shrinking blocks carried by said sector plate, rollers carried by said blocks, a shrinking ring operated by said piston and having wedge faces contacting with said rollers, means for returning said blocks to their normal position and means for limiting the movement of said piston and ring.

4. In a device of the kind described the combination with a supporting frame, carrying a fluid operated piston, of a sector plate secured to said frame, and comprising sectors of different sizes, shrinking blocks sliding upon one set of sectors and between the other set of sectors, a shrinking ring operated by said piston and movable on one set of sectors and around the other set, and means carried by said ring for engaging the shrinking blocks, and moving them inwardly, and means for moving said blocks outwardly.

5. In a device of the kind described the combination with a supporting frame, carrying a fluid operated piston, of a sector plate secured to said frame, and embodying two sets of sectors and an inner ring and an outer ring, shrinking blocks, sliding upon one set of sectors and between the sectors of the other set, each block carrying a roller, springs acting upon said blocks, a shrinking ring operated by said piston carryin wedge blocks to engage said rollers, a gui e plate, and a face plate, all arranged substantially as set forth.

6. In a device of the kind described the combination with a substantially upright supporting frame. carrying a fluid operated piston, of a sector plate connected to said frame, shrinking blocks, each having a roller and a guide, springs acting upon said blocks to move them outwardly, a shrinking ring operated by said piston and having wedges to move said blocks inwardly, together with means for guiding and covering said parts as set forth and means for limiting the movement of said piston and ring.

In testimony whereof, I hereunto aflix my signature.

JOHN LUKES. 

